Loose-leaf book



Aug. 4, 1925. 1,548,332

J. SCHADE LOOSE LEAF BOOK Filed June 11. 1924 i To all whom itmayconcern:

Patented Aug. 4, ,1925.

UNITED STATES PATENT OFFICE.

' JOHN SGHADE, OF HOLYOKE, MASSACHUSETTS, ASSIGNOR '].0 NATIONAL BLANKBOOK COMPANY, OF HOLYOKE, MASSACHUSETTS, A VOLUNTARY TRUST ASSOCIATION.

LoosE-Lw 3001:.

'Be it known that 1, JOHN SoHAnE, a citizen of the United States,residing, at the city of Holyoke, in the county of Hampden and State ofMassachusetts, have invented certain new and useful Improvements inLoose-Leaf Books; and I do declare the i01 lowing to be a full, clear,and exact description of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

This inventionrelates to loose leaf binders, but more particularly hasreference to that class of such devices which have metal hingeconnection between the fleirible side cover portions and a metal back.

The present improvement is closely analogous to that which is set forthand described in my rior application, filed July 28,1923, under gerialNo. 654,300, which has become Patent No. 1,512,489, issued Oct. 1, 1924,and the object of the resent invention is to provide a construction inwhich the spaced eyes along the edges of the covers are formed by thefingers themselves.

Referring, to the accompanyin Fi re 1 is a back view bro en away,showing a book constructed in accordance with the present invention.

Figure 2 is a back view broken away showing one of the covers equippedwith the spaced eyes.

Figure 3 is a section at the line 3-3 of Figure 2.

Fi re 4 is a detail plan view of the meta strip from which the hingingelement utilized at Figure 2 is formed but showing the fingersstaggered.

Fi re 5 is a view similar to Figure 4 but s owing. the fingers oppositeeach other.

Figure 6 is a view similar to Figure 3 illustrating a cover equippedwith a metal hinge element formed from the strip shown at Figure 5.

Figure 7 is a plan view of a modified form of metal strip in which thefingers forming the eyes are connected at their outer extremities, whilethe opposite fingers are of any suitable number.

Figure 8 is a view similar to Figure 3 showing the metal hinge elementsof the cover made from the strip shown at Figure 7.

Figure 9 is a detail perspective of the strip shown at Figure 7 as itappears after drawing the eyes are formed and the opposite fingerspartially bent into clinching position, and Figure 10 is an insidebroken plan view illustrating a cover equipped with the strip shown atFigure 9 and in hinged relation with the metal back.

Similar numeralsof reference denote like parts in the several figure ofthe drawing. In my application above referred to the hinging elementof'the .covers was formed from a metallic strip with oppositelyextending fingers in staggered relation to each other, and the spacedeves were formed by the central or solid portionof the strip and bothsets of fingers were bent around and then clinched in the upper andlower surfacesof the cover respectively.

In the present invention a strip 1 such as is shown at Figure 4 is used.and the fingers 2 of one set are curled around to form spacedeves suchas are shown at 3 in Figures 1. 2 and 3. while the fingers 4 of theopposite set pierce through the cover 5 and are then clinched beneaththe same as shown at Figure 3.

But these finger of the strip 1 need not. be staggered since they canextend opposite each other as shown at Figure 5. and when the fingers 2are bent around to form the eyes and the fingers 4 clinched through thecovers the appearance will be as is illustrated at Figure 6.

But the strip 1 may be so blanked out that the outer ends of the fingersthat are curled around to form the-eyes will be connected bv ,the metalof the strip as shown at 6 in Figure 7, so that when these fingers 6 arebent around to form the eyes their outer ends will all be connectedtogether, and thus the structure will be greatly strengthened. and theopposite fingers may be of any desired number and are then clinchedthrough the cover, as illustrated at Figure 8.

The curling around of these fingers 6 to form the eyes 3 and theclinching position of the opposite fingers 4 are clearly illustrated atFigure 9, and the inside appearance of the cover when hinged to themetal back by this style of fingers is shown at Figure 10.

The metal back plate 7 has integral spaced alined eyes 8 formed at itsedges, and when the book cover are provided with the spaced eiined eyesin the manner before described, the eyes of the covers are interengagedwith the eyes of the metal back plate, and pintles 9 are then insertedthrough said eyes,

By forming the spaced eyes at the inner edges of the covers, inthegmanner herein described, the clinching finger can be bent at theirbases Where they join the strip 1, thus presenting an exceedingly neatand desirable appearance at the outer feces of the covers, as shown atFigure 1.

What is claimed is A book cover of the character described,

comprising e metal beck having integral spaced sdined eyes formed at itsside edges, metal strips having spaced fingers extending from theiropposite side ed es, one set of the fingers of each strip bein clinchedthrough the respective covers 0 the book while the other set of fingersof each strip are curled in unclenched position to form spaced ,alinedeyes that extend from the inner edges of the covers, the e es of thecovers and back being interengage and pintles inserted therethrough.

In testimony whereof I afiix my signature hereto.

J OHN SCHADE.

